error "syntax error before numeric constant"

[tvnaidu]

I am getting this error for line 108, I kept C code also below, any idea?.
main.c:108: underscore in number
main.c:108: syntax error before numeric constant



104: #define EXPAND_CONCAT(n ame1,name2) name1 ## name2
105: #define CONCAT(name1,na me2) EXPAND_CONCAT(n ame1,name2)
106: #define RT_MODEL CONCAT(MODEL,_r tModel)

108: extern RT_MODEL *MODEL(void);

[Banfa]

What is MODEL defined to?

From what you have posted line 108 expands to

extern MODEL_rtModel *MODEL(void);

unless MODEL is defined to something. From the error message it looks like MODEL is defined to some number.

[tvnaidu]

appreciated. I defined MODEL (actually it was defined, but word split into two with space), this is generated code, now it compiles. thanks.